Fix #64 anonymous LDAP bind and robust handling of binary LDAP attributes

[clem9669]

Hey,

I had the same issue as in: #64 & maybe 26 and 29.

Done:

• fix anonymous bind path by using ldap3 default anonymous connection when no user is provided
• normalize empty user input and trim host string
• harden parsing for SID, bytes attributes, and LARGE_INTEGER values returned as strings/bytes

This has been tested on own lab (NOT HTB lab).
cheers

PS: sorry the ugly diff file, i had to dos2unix.